This 60-page special issue of The Sciences features articles written by leading researchers in the fields of astrobiology and evolution. Appropriately titled The Frontiers of Life, article topics include Martian meteorites, rock lovers, sulfur eaters, the world's toughest organism, and extrasolar planets. Feature authors are Stephen Jay Gould, Patrick Huyghe, Andrew Knoll, John Delaney, Ricardo Guerrero, Lynn Margulis, Jay Melosh, and Laurence Marschall. This issue won the 1998 Magazine Award for a Single-Topic Issue.